to make 2 cups of cooked pasta from 1 cup of dry pasta (or 0.9 cups to be exact), you will need around 1 cup (or 0.9 cups) of dried pasta. in general, the ratio of dry pasta to cooked pasta is around 1:1.5 to 1:2, because the dry pasta expands when it is boiled or cooked, and it can easily double in size.